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vhost: fix offloading #347

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vhost: fix offloading #347

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31 changes: 22 additions & 9 deletions src/vhost.c
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Original file line number Diff line number Diff line change
Expand Up @@ -184,31 +184,44 @@ static int vhost_poll(struct pg_brick *brick, uint16_t *pkts_cnt,
/* count rx bytes: burst is packed so we can directly iterate */
for (int i = 0; i < count; i++) {
in[i]->l2_len = sizeof(struct ether_hdr);
struct eth_ip_l4 *hdr =
rte_pktmbuf_mtod(in[i],
struct eth_ip_l4 *);
struct eth_ip_l4 *hdr = rte_pktmbuf_mtod(in[i],
struct eth_ip_l4 *);
uint16_t eth_type = rte_cpu_to_be_16(hdr->ethernet.ether_type);
uint8_t proto;

if (eth_type == ETHER_TYPE_IPv4) {
proto = hdr->ipv4.next_proto_id;
in[i]->ol_flags |= PKT_TX_IP_CKSUM | PKT_TX_IPV4;
in[i]->l3_len = sizeof(struct ipv4_hdr);

if (proto == TCP_PROTOCOL_NUMBER)
if (proto == TCP_PROTOCOL_NUMBER) {
in[i]->l4_len = (hdr->v4tcp.data_off >> 4) * 4;
else if (proto == UDP_PROTOCOL_NUMBER)
if (in[i]->ol_flags & PKT_TX_TCP_SEG) {
in[i]->ol_flags |= PKT_TX_TCP_CKSUM;
hdr->v4tcp.cksum = 0;
hdr->v4tcp.cksum = rte_ipv4_phdr_cksum(
&hdr->ipv4, in[i]->ol_flags);
}
} else if (proto == UDP_PROTOCOL_NUMBER) {
in[i]->l4_len = sizeof(struct udp_hdr);

}
} else if (eth_type == ETHER_TYPE_IPv6) {
proto = hdr->ipv6.proto;
in[i]->l3_len = sizeof(struct ipv6_hdr);

if (proto == TCP_PROTOCOL_NUMBER)
if (proto == TCP_PROTOCOL_NUMBER) {
in[i]->l4_len = (hdr->v6tcp.data_off >> 4) * 4;
else if (proto == UDP_PROTOCOL_NUMBER)
if (in[i]->ol_flags & PKT_TX_TCP_SEG) {
hdr->v6tcp.cksum = 0;
hdr->v6tcp.cksum = rte_ipv6_phdr_cksum(
&hdr->ipv6, in[i]->ol_flags);
}
} else if (proto == UDP_PROTOCOL_NUMBER) {
in[i]->l4_len = sizeof(struct udp_hdr);
}
}

rx_bytes += rte_pktmbuf_pkt_len(in[i]);

}
rte_atomic64_add(&state->rx_bytes, rx_bytes);

Expand Down